Keychain USB cable



FIG. 1 is a perspective view of a keychain USB cable showing my new design, according to a first embodiment;

FIG. 2 is a front view of the design shown in FIG. 1, the rear view being a mirror image thereof;

FIG. 3 is a left side view of the design shown in FIG. 1;

FIG. 4 is a right side view of the design shown in FIG. 1;

FIG. 5 is a top view of the design shown in FIG. 1; and,

FIG. 6 is a bottom view of the design shown in FIG. 1. 

The ornamental design for a keychain USB cable, as shown and described. 